Email vs. a handwritten note. Wonder bread vs. homemade bread. Spaghetti-O's vs. homemade spaghetti. Clothes off the rack vs. clothes tailored to fit.
There's a difference. A big one. And people notice. Handmade things with a personal touch are almost always preferred to the mass produced.
Hand drawn pre-event visuals (like the one above) are much warmer and friendlier than the standard computer generated visuals most folks use. And they can support your branding just as much as those slick and glossy computer generated prints.